1. Aerobic, Spore Forming Bacteria;Smith,1952
2. Gordon, R. E.: Some taxonomic observations on the genus Bacillus. In Briggs, J. D. (ed.): Biological Regulation of Vectors. The Saprophytic and Aerobic Bacteria and Fungi. U.S. Department of Health, Education, and Welfare, Publication No. NIH 77–1180, 1977, pp. 67–82.
3. Some thoughts to the taxonomy of Bacillus thuringiensis.;Lysenko;Entomophaga Mem. Hors Serie,1962
4. The Genus Bacillus.;Gordon,1973